linux-kernel - Re: [PATCH V5 0/3] arm: dts: dra7: Updates for adding crossbar device

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Message-ID: <536B3CB0.2050907@ti.com>
Date:	Thu, 8 May 2014 13:43:36 +0530
From:	Archit Taneja <archit@...com>
To:	Darren Etheridge <detheridge@...com>,
	Sricharan R <r.sricharan@...com>
CC:	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-doc@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-omap@...r.kernel.org>, <linus.walleij@...aro.org>,
	<linux@....linux.org.uk>, <tony@...mide.com>, <rnayak@...com>,
	<marc.zyngier@....com>, <grant.likely@...aro.org>,
	<mark.rutland@....com>, <tglx@...utronix.de>,
	<galak@...eaurora.org>, <santosh.shilimkar@...com>, <nm@...com>,
	<bcousson@...libre.com>, <robherring2@...il.com>
Subject: Re: [PATCH V5 0/3] arm: dts: dra7: Updates for adding crossbar device

On Wednesday 07 May 2014 03:15 AM, Darren Etheridge wrote:
> Sricharan R <r.sricharan@...com> wrote on Tue [2014-May-06 19:26:16 +0530]:
>> Some socs have a large number of interrupts requests to service
>> the needs of its many peripherals and subsystems. All of the interrupt
>> requests lines from the subsystems are not needed at the same
>> time, so they have to be muxed to the controllers appropriately.
>> In such places a interrupt controllers are preceded by an
>> IRQ CROSSBAR that provides flexibility in muxing the device interrupt
>> requests to the controller inputs.
>>
>> The dts file update to support the crossbar device and convert
>> peripheral irq numbers to crossbar number are added here.
>>
>> This is a rebase of V4 series on top of 3.15-rc4
>>
>> This series depends on crossbar-driver-fixes sent below
>> http://marc.info/?l=linux-omap&m=139929963420299&w=2
>>
>> Sricharan R (3):
>>    arm: dts: dra7: Add crossbar device binding
>>    arm: dts: dra7: Replace peripheral interrupt numbers with crossbar
>>      inputs
>>    arm: dts: dra7: Add routable-irqs property for gic node
>>
>
> OK, assuming the bisectability issues discussed earlier on this thread
> are addressed.  I have tested the earlier crossbar patch series in
> conjunction with this dts series with VIP capture and DSS display
> running together on DRA7.  Looks good with this combination of
> devices. VIP is one of the modules that must have a crossbar mapping as
> there is no default interrupt mapping for it, therefore VIP makes a good
> test case.
>
> So please feel free to add:
>
> Tested-by: Darren Etheridge <detheridge@...com>

DMM doesn't get used by default since it's hwmod is missing in DRA7x's 
hwmod data. I added the hwmod and tried using dmm with omapdrm, it works 
fine.

So, for DSS and DMM:

Tested-by: Archit Taneja <archit@...com>

>
>
>>   arch/arm/boot/dts/dra7.dtsi |  109 +++++++++++++++++++++++++------------------
>>   1 file changed, 63 insertions(+), 46 deletions(-)
>>
>> --
>> 1.7.9.5
>>
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